Epidemiology of inflammatory bowel disease in racial and ethnic migrant groups

Table 8 Ulcerative colitis in Caucasian and South Asian migrant groups (1054 cases)

Study	Country (Region)	Study period	Number of cases	Disease extent, Montreal	Ethnic groups, %
					SA	Caucasian (or other control)
Adult
Carr (1999)[15]	United Kingdom (Leicester)	1991-1994	74	E1 + E2	63.7	68.3
				E3	36.3	31.7
Rashid (2008)[37]	United Kingdom (Manchester)	2008	82	E3	41.0	26.0
Walker (2011)[35]	United Kingdom (NW London)	2008-2010	461	E1	9.9	26.1
				E2	27.1	31.4
				E3	63.0	42.0
Goodhand (2012)[36]	United Kingdom (East London)	2010	89	E1	2.0	31.0
				E3	60.0	33.0
Hilmi (2009)[39]	Malaysia (Malaysia)	2004-2005	118	E1 + 2	39.6	56.7 (Malay)
				E3	60.4	43.4 (Malay)
Paediatric
Carroll (2016)[38]	Canada (British Columbia)	1997-2012	230	E1	3.0	5.0
				E2	9.0	19.0
				E3	12.0	18.0
				E4	77.0	58 (Non-South Asian)

Adult and paediatric studies on disease extent. Bold font shows significant differences between AA and population group (809/1054 cases). AA: African-American; SA: South Asian.